WO2023134484A1 - Appareil de revêtement - Google Patents

Appareil de revêtement Download PDF

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Publication number
WO2023134484A1
WO2023134484A1 PCT/CN2022/144267 CN2022144267W WO2023134484A1 WO 2023134484 A1 WO2023134484 A1 WO 2023134484A1 CN 2022144267 W CN2022144267 W CN 2022144267W WO 2023134484 A1 WO2023134484 A1 WO 2023134484A1
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WO
WIPO (PCT)
Prior art keywords
pattern
base film
roller
coating
coating device
Prior art date
Application number
PCT/CN2022/144267
Other languages
English (en)
Chinese (zh)
Inventor
李克强
刘萧松
吴志阳
卢毅
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to CN202290000315.4U priority Critical patent/CN221051971U/zh
Priority to EP22920114.0A priority patent/EP4382631A1/fr
Publication of WO2023134484A1 publication Critical patent/WO2023134484A1/fr
Priority to US18/735,190 priority patent/US20240327972A1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/24—Vacuum evaporation
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/04—Coating on selected surface areas, e.g. using masks
    • C23C14/042—Coating on selected surface areas, e.g. using masks using masks
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/14—Metallic material, boron or silicon
    • C23C14/20—Metallic material, boron or silicon on organic substrates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/54—Controlling or regulating the coating process
    • C23C14/541—Heating or cooling of the substrates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
    • C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
    • C23C14/562—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks for coating elongated substrates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of coating, in particular to a coating equipment.
  • Energy saving and emission reduction is the key to the sustainable development of the automobile industry.
  • electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy saving and environmental protection.
  • battery technology is an important factor related to its development.
  • the current collector plays an extremely important role, and its performance affects the performance of the battery. Therefore, how to effectively improve the performance of current collectors is an urgent problem to be solved.
  • An embodiment of the present application provides a coating device capable of forming a high-precision pattern coating on a base film, thereby improving the performance of components (such as current collectors) including the base film.
  • a coating device including: a plating resist pattern unit, which is used to form a pattern composed of a plating resist substance on a partial area of the surface of the base film, and the plating resist substance is used to limit metal vapor to form a coating film;
  • the film coating unit is used for applying the metal vapor on the base film with the pattern, so as to form a metal coating film on the area of the base film surface where the plating resist substance is not provided.
  • the regional plating resist method is adopted, that is, the pattern unit of the resist plating forms a pattern composed of a plating resist substance on a part of the surface of the base film, and the coating unit is in the process of coating the base film.
  • the area of the resist material on the surface of the film cannot be coated, and the other areas except the area of the resist material are positively coated, so that a high-precision pattern coating can be formed, which is beneficial to improving the performance of components including the base film.
  • the pattern resisting plating unit includes: a heating roller, used to heat the resist substance; a pattern roller, provided with the pattern on the surface, used to When using a pattern roll, the heated plating resist material is printed on the base film in the shape of the pattern, so as to form the pattern on the partial area of the surface of the base film.
  • the plating resist pattern unit includes a heating roller for heating the plating resist substance, so that the heated plating resist substance can be more easily printed on the base film.
  • the resist pattern unit includes a pattern roller with a pattern on the surface, so that when the base film passes through the pattern roller, the heated resist material can be printed on the base film with the pattern on the pattern roller, so that the surface of the base film The pattern formed on a part of the area is the same as the required pattern, thereby improving the accuracy of the pattern formed on the surface of the base film.
  • the pattern resisting plating unit further includes: a bottom roller, arranged side by side with the pattern roller on both sides of the base film, and when the base film passes from the pattern roller and the bottom When passing between the rollers, under the pressure between the pattern roller and the bottom roller, the plating resist substance on the pattern roller is formed on a partial area of the surface of the base film in the shape of the pattern .
  • the pattern resisting plating unit includes a bottom roller arranged side by side with the pattern roller on both sides of the base film, so that the pattern roller and the bottom roller can exert pressure on each other.
  • the pressure between the pattern roll and the bottom roll can make the plating resist on the pattern roll form on the base film surface as much as possible, so as to ensure the accuracy of the coating.
  • the pattern resisting plating unit further includes: an anilox roller, arranged between the heating roller and the pattern roller, the surface of the anilox roller is provided with a plurality of concave holes, so The concave hole is used to store the heated plating resist substance, and the anilox roller is used to transfer the stored heated plating resist substance to the pattern roller.
  • the heated plating resist substance can be evenly stored in the plurality of concave holes on the surface of the anilox roller.
  • the anilox roller transmits the plating resist substance to the pattern roller, it can also transmit the plating resist substance to the pattern roller evenly, avoiding the fact that part of the surface of the pattern roller receives more plating resist substances and part of the surface receives the plating resist. In the case of little or no substance, the accuracy of the pattern printed on the base film is guaranteed.
  • the pattern roller is a roller made of rubber.
  • the pattern roller is provided as a roller made of rubber, which can improve the precision of the pattern on the pattern roller.
  • the method further includes: a cooling unit configured to cool the base film with the pattern after the pattern is formed on the partial area of the surface of the base film.
  • the cooling unit can cool the base film when the thickness of the metal coating is relatively thick and the heat borne by the base film is high, which avoids the deformation of the base film at high temperature and effectively guarantees the coating And the normal progress of subsequent processes.
  • the cooling unit includes: a cooling drum, configured to transport and cool the base film with the pattern, wherein the cooling drum is configured as a hollow structure, and the hollow structure houses There is a cooling liquid for cooling the base film having the pattern during circulating flow.
  • the above technical solution cools the base film through the cooling drum, which is simple to implement.
  • the cooling drum is provided with a circulating cooling liquid, and a better cooling effect can be achieved through the circulating cooling liquid. That is to say, the embodiment of the present application can achieve a better cooling effect in a relatively simple manner.
  • the surface of the cold drum is coated with an insulating material.
  • the insulating material has a thickness of 30um-200um.
  • the cooling unit further includes: a bias roller, arranged downstream of the cooling drum in the conveying direction of the base film, for absorbing the base film with the pattern on surface of the cold drum.
  • the above technical solution strengthens the attachment between the base film and the cold drum by setting the bias roller, thereby improving the cooling effect of the cooling liquid in the cold drum on the base film. That is to say, the above technical solution effectively enhances the cooling effect on the base film through the mutual cooperation of the cooling drum and the bias roller.
  • the cold drum is grounded and the bias roller is connected to a negative voltage.
  • the cooling unit further includes: an air cooling tube including a heat transfer medium, and the air cooling tube passes the heat transfer medium into the cooling drum and the base with the pattern through an air port. between the films, so that the thermally conductive medium cools the base film having the pattern.
  • an air-cooled pipe is further provided, that is, the base film is cooled under the joint action of the cold drum and the air-cooled pipe, which can further enhance the cooling effect on the base film.
  • the heat transfer medium is an inert gas.
  • the coating unit includes a vacuum coating mechanism configured to deliver metal vapor toward the base film on the cooling drum.
  • the plating resist substance is silicone oil.
  • the metal coating has a thickness of 1um-3um.
  • the thickness of the metal coating film is set to 1um-3um, so that the resistance of the components prepared by the coating equipment can be reduced.
  • the base film is a polyethylene terephthalate PET film.
  • the thermal stability of PET is relatively high, therefore, setting the base film as a PET film can improve the thermal stability of the base film. Further, the weight reduction is achieved by PET, thereby realizing the weight reduction of the components prepared by the coating equipment, thereby increasing the energy density.
  • the metal vapor is copper vapor or aluminum vapor.
  • the metal vapor is copper vapor or aluminum vapor, so that the component prepared by the coating equipment is a current collector, thereby achieving the purpose of improving the performance of the current collector, and further improving the performance of the battery including the current collector.
  • Fig. 1 is a schematic structural diagram of a vehicle disclosed in an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of a coating device according to an embodiment of the present application.
  • FIG. 3 is a schematic structural view of another coating device according to an embodiment of the present application.
  • FIG. 4 is a schematic structural view of another coating device according to the embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of yet another coating device according to an embodiment of the present application.
  • batteries as a main power device, have been widely used in many fields such as electric vehicles, military equipment, and aerospace.
  • FIG. 1 it is a schematic structural diagram of a vehicle 1 according to an embodiment of the present application.
  • the vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or Extended range cars, etc.
  • a motor 40 , a controller 30 and a battery 10 can be arranged inside the vehicle 1 , and the controller 30 is used to control the battery 10 to supply power to the motor 40 .
  • the battery 10 may be provided at the bottom or front or rear of the vehicle 1 .
  • the battery 10 can be used for power supply of the vehicle 1 , for example, the battery 10 can be used as an operating power source of the vehicle 1 , for a circuit system of the vehicle 1 , for example, for starting, navigating and running power requirements of the vehicle 1 .
  • the battery 10 can not only be used as an operating power source for the vehicle 1, but also can be used as a driving power source for the vehicle 1, replacing or partially replacing fuel oil or natural gas to provide driving power for the vehicle 1.
  • a battery refers to a physical module including one or more battery cells to provide electric energy.
  • the batteries mentioned in this application may include battery modules or battery packs.
  • Batteries generally include a case for enclosing one or more battery cells. The box can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cells.
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in this embodiment of the present application.
  • a battery cell may also be referred to as a battery cell.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive pole piece, a negative pole piece and a diaphragm.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the positive electrode collector without the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. Fluid, the positive electrode current collector not coated with the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, and the negative electrode collector without the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. Fluid, the negative electrode current collector not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the material of the isolation film may be polypropylene (polypropylene, PP) or polyethylene (polyethylene, PE).
  • the current collector plays an extremely important role, and its performance greatly affects the performance of the battery.
  • the embodiment of the present application proposes a coating device capable of forming a high-precision patterned coating on the base film, thereby improving the performance of the current collector.
  • FIG. 2 is a schematic structural diagram of a coating device 200 according to an embodiment of the present application.
  • the coating device 200 may include: a plating resist pattern unit 210 and a coating unit 220 .
  • the plating resist pattern unit 210 is used to form a pattern composed of a plating resist substance on a partial area of the surface of the base film 230, and the plating resist substance is used to restrict metal vapor to form a plating film.
  • the coating unit 220 is used for applying metal vapor on the base film 230 with the pattern, so as to form a metal coating film on the area of the base film 230 surface where no plating resist is provided.
  • the plating resist pattern unit 210 forms a pattern composed of a plating resist substance on a partial area of the base film 230 surface
  • the coating unit 220 forms a pattern composed of a plating resist material on a partial area of the base film 230 surface.
  • the area of the resist material on the surface of the base film 230 cannot be coated, and the other areas except the area of the resist material are positively coated, so that a high-precision pattern coating can be formed, which is conducive to improving the components comprising the base film 230. performance.
  • the metal vapor may be copper vapor or aluminum vapor.
  • the coating device 200 may be used to prepare a current collector. Therefore, the embodiment of the present application achieves the purpose of improving the performance of the current collector, and further improves the performance of the battery including the current collector.
  • the coating device 200 can also be used to prepare other components.
  • the following uses the coating device 200 to prepare the current collector as an example for illustration. However, it should be understood that the embodiment of the present application is not limited thereto.
  • the material of the traditional positive electrode current collector is aluminum foil
  • the material of the traditional negative electrode current collector is copper foil.
  • the density of copper is 8.9g/cm3
  • the density of aluminum is 2.79g/cm3
  • the total mass of the positive and negative current collectors accounts for about It is about 14%-18% of the mass, so it cannot meet the pursuit of high energy density and light weight of the battery.
  • the coating device 200 can be used to prepare a composite current collector.
  • the base film 230 of the composite current collector may be a plastic film, and the upper surface and the lower surface of the plastic film are respectively coated with a metal layer.
  • the weight reduction of the current collector is achieved through the plastic film, thereby effectively improving the energy density of the battery.
  • the plastic film as the base film 230 has a strong tensile strength, so that the window of tension and pressure in the preparation process will be larger, so that the coating equipment 200 can use higher pressure to achieve greater compaction density and improve the preparation process. ability.
  • the plastic film can be oriented polypropylene (oriented polypropylene, OPP) plastics, polyimide (polyimide, PI) plastics, polyethylene terephthalate (polyethylene glycol terephthalate, PET) plastics, casting Polypropylene (cast polypropylene, CPP) plastic or polyvinyl chloride (Polyvinyl chloride, PVC) plastic, and one or more of their derivatives, cross-linked products and copolymers.
  • the base film 230 in the embodiment of the present application may be PET to improve the thermal stability of the base film 230 .
  • the coating unit 220 may include a vacuum coating mechanism 221 for applying metal vapor on the base film 230 having the pattern in a vacuum environment.
  • the vacuum coating mechanism 221 can be set in the chamber, and then use a vacuum pump to evacuate the air in the chamber to make the chamber in a vacuum environment, so that the vacuum coating mechanism 221 can vacuum coat the base film 230 .
  • the degree of vacuum can be controlled by the amount of air pumped out by the vacuum pump, and can be adjusted according to requirements.
  • the degree of vacuum may be (1 ⁇ 7)*10 ⁇ 2 Pa.
  • the vacuum coating mechanism 221 may be an evaporation source.
  • the evaporation source when the coating equipment 200 is used to prepare a positive electrode collector, the evaporation source can be an aluminum evaporation source, and the metal vapor is an aluminum vapor; when the coating equipment 200 is used to prepare a negative electrode collector, the evaporation source can be a copper evaporation source, The metal vapor may be copper vapor.
  • the evaporation source may be a metal wire, or may also be a metal block or other structures, which are not specifically limited in this embodiment of the present application. If the evaporation source is a metal wire, such as an aluminum metal layer, as shown in FIG. 3 again, the coating unit 220 may further include a wire feeding mechanism 222 . That is, the coating unit 220 includes a vacuum coating mechanism 221 and a wire feeding mechanism 222 , and the wire feeding mechanism 222 is used to continuously feed the metal wire so that the vacuum coating mechanism 221 sends metal vapor to the base film 230 .
  • the metal wire when the evaporation source is a metal wire, the metal wire has a high material utilization rate and is easy to clean.
  • the thickness of the metal coating can be determined according to a specific application scenario. For example, if considering electrical properties, the resistance of the current collector needs to be smaller, the thickness of the metal coating can be slightly thicker, for example, the thickness of the metal coating is 1um-3um. In this way, the resistance of the current collector can be reduced.
  • the embodiment of the present application does not specifically limit the plating resist substance, as long as the substance that can be used to restrict metal vapor to form a coating film can be understood as the plating resist substance of the embodiment of the present application.
  • the resist material can be silicone oil.
  • the plating resist pattern unit 210 may include a heating roller 211 and a pattern roller 212 .
  • the heating roller 211 is used for heating the plating resist substance.
  • Pattern roll 212 surface is provided with pattern, is used for when base film 230 passes pattern roll 212, the plate resist material after the heating is printed on the base film 230 with the shape of this pattern, to form on the part area of base film 230 surface. The pattern.
  • the heating roller 211 can heat the plating resist substance under vacuum.
  • the heating roller 221 can heat the plating resist material to 80° C.-120° C. in a vacuum environment.
  • the heating roller 211 may transfer the heated plating resist substance to the pattern roller 212 by means of evaporation.
  • the heating roller 211 and the pattern roller 212 may be disposed on the same side of the base film 230 .
  • the heating roller 211 and the pattern roller 212 can be arranged side by side on the same side of the base film 230 , and of course, the heating roller 211 can also be arranged upstream of the pattern roller 212 .
  • the heating roller 211 and the pattern roller 212 may also be disposed on both sides of the base film 230 .
  • the pattern roller 212 may be a roller made of flexible material.
  • the flexible material may be rubber. Since the precision of the pattern processed on the surface of the rubber is high, the pattern roller 212 is provided as a roller made of rubber, which can improve the precision of the pattern on the pattern roller 212 .
  • the precision range of the pattern provided on the surface of the pattern roller 212 may be 10um-500um.
  • it can be 50um-500um.
  • the plating resist pattern unit 210 includes a heating roller 211 for heating the plating resist substance, so that the heated plating resist substance can be more easily printed on the base film 230 .
  • the resist pattern unit 210 includes a pattern roller 212 with a pattern on its surface, so that when the base film 230 passes through the pattern roller 212, the heated resist material can be printed on the base film 230 with the pattern on the pattern roller 212 Therefore, the pattern formed on the partial area of the surface of the base film 230 is the same as the desired pattern, thereby improving the precision of the pattern formed on the surface of the base film 230 .
  • the plating resist pattern unit 210 may further include a bottom roller 213 .
  • the bottom roll 213 and the pattern roll 212 are arranged side by side on both sides of the base film 230, and when the base film 230 passes between the pattern roll 212 and the bottom roll 213, under the pressure between the pattern roll 212 and the bottom roll 213, the pattern
  • the plating resist substance on the roller 212 is formed on a partial area of the surface of the base film 230 in the shape of the pattern.
  • the size of the bottom roll 213 may be larger than the size of the pattern roll 212 .
  • the bottom roller 213 can apply greater pressure to the pattern roller 212 , so that the plating resist substance on the pattern roller 212 can be more fully printed on the base film 230 .
  • the size of the bottom roll 213 can also be the same as that of the pattern roll 212 .
  • the bottom roll 213 may be smaller in size than the pattern roll 212 .
  • the number of bottom rollers 213 may be multiple.
  • the plurality of bottom rollers 213 are all in contact with the pattern roller 212 , and each bottom roller 213 may be in contact with a partial surface area of the pattern roller 212 .
  • the plating resist pattern unit 210 includes a bottom roller 213 arranged side by side with the pattern roller 212 on both sides of the base film 230, so that the pattern roller 212 and the bottom roller 213 can exert pressure on each other.
  • the pressure between the pattern roll 212 and the bottom roll 213 can make the plating resist material on the pattern roll 212 be formed on the base film 230 surface as much as possible, so that Guarantee the accuracy of coating.
  • the plating resist pattern unit 210 may further include an anilox roller 214 .
  • the anilox roller 214 is arranged between the heating roller 211 and the pattern roller 212, and the surface of the anilox roller 214 is provided with a plurality of concave holes, and the concave holes are used to store the heated plating resist substance, and the anilox roller 214 is used for The stored heated plating resist substance is delivered to the pattern roller 212 .
  • the heating roller 211 may transmit the heated plating resist substance to the anilox roller 214 by means of evaporation.
  • the anilox roller 214 also transmits the stored heated plating resist substance to the pattern roller 212 by means of evaporation.
  • anilox roller 214 For the specific structure of the anilox roller 214, reference may be made to the anilox roller in the related art, which will not be discussed in detail herein.
  • the heated plating resist substance can be evenly stored in the plurality of concave holes on the surface of the anilox roller 214 .
  • the anilox roller 214 transmits the plating resist substance to the pattern roller 212
  • the plating resist substance can also be uniformly conveyed to the pattern roller 212, avoiding that the pattern roller 212 part surface receives a lot of plating resist substance and part of the surface receives In the case that there is little or no plating resist material, the precision of the pattern printed on the base film 230 is ensured.
  • the thicker the metal coating the higher the heat that the base film 230 bears.
  • the temperature of the base film 230 may reach two to three hundred degrees, which may cause deformation of the base film 230 .
  • the coating device 200 of the embodiment of the present application may further include a cooling unit 240 .
  • the cooling unit 240 is used for cooling the patterned base film 230 after forming a pattern on a partial area of the surface of the base film 230 .
  • the cooling unit 240 can cool the base film 230 when the thickness of the metal coating film is relatively thick and the heat borne by the base film 230 is high, thereby avoiding the deformation of the base film 230 at high temperature. It effectively guarantees the normal progress of coating and subsequent processes.
  • the cooling unit 240 may include a cooling drum 241 for transferring and cooling the patterned base film 230 .
  • the cooling drum 241 is configured as a hollow structure, and the hollow structure contains a cooling liquid, and the cooling liquid is used to cool the base film 230 with the pattern during the circulating flow.
  • the cold drum 241 may be a carbon steel roll or a stainless steel roll, etc.
  • the diameter of the cold drum 241 may be in the range of 300mm-600mm.
  • the cooling liquid may be water, a mixed liquid of water and ethylene glycol, or the like, or the cooling liquid may be at least one of liquid nitrogen, liquid argon, and liquid carbon dioxide.
  • the cold drum 241 can be arranged on the top of the vacuum coating mechanism 221, and when the vacuum coating mechanism 221 is configured to transport the metal vapor towards the base film 230 on the cold drum 241, the cold drum 241 can be used for the substrate.
  • the film 230 is cooled to ensure that the temperature of the base film 230 is within a normal range.
  • the above technical solution uses the cooling drum 241 to cool the base film 230 , which is simple to implement. And the cooling drum 241 is provided with circulating cooling liquid, which can achieve a better cooling effect through the cooling liquid circulating flow. That is to say, the embodiment of the present application can achieve a better cooling effect in a relatively simple manner.
  • the base film 230 itself may be conductive, in order to avoid conduction between the base film 230 and the cold drum 241 . Further, the surface of the cold drum 241 may be coated with an insulating material.
  • the insulating material may be ceramics, rubber, insulating varnish, asbestos, etc.
  • the thickness of the insulating material may be in the range of 50um-2000um.
  • the cooling unit 240 may further include a bias roller 242 .
  • the bias roller 242 is disposed downstream of the base film 230 of the cooling drum 241 in the conveying direction, and is used for adsorbing the base film 230 with a pattern on the surface of the cooling drum 241 .
  • the cold drum 241 may be grounded and the bias roller 242 may be connected to a negative voltage.
  • the bias roller 242 can be connected to a negative voltage of 50V-500V.
  • the cold drum 241 may be connected to a negative voltage, and the bias roller 242 may be grounded.
  • the thickness of the insulating material may be 30um-200um. In this way, the heat conduction effect and the bias voltage effect can be balanced.
  • the above technical solution strengthens the attachment between the base film 230 and the cold drum 241 by setting the bias roller 242 , thereby improving the cooling effect of the cooling liquid in the cold drum 241 on the base film 230 . That is to say, the above technical solution effectively enhances the cooling effect on the base film 230 through the mutual cooperation of the cooling drum 241 and the bias roller 242 .
  • the cooling unit 240 may further include an air cooling tube 243 .
  • the air-cooling tube 243 includes a heat-conducting medium, and the air-cooling tube 243 passes the heat-conducting medium into between the cooling drum and the patterned base film 230 through the air port, so that the heat-conducting medium cools the patterned base film 230 .
  • a heat conduction medium may be passed between the cold drum 241 and the base film 230 in a vacuum environment as a heat conduction medium between the film and the cold drum 241 to cool the base film 230 .
  • the heat conducting medium may be an inert gas, such as argon, helium and the like.
  • the density of the inert gas can be 1-5 per 100 mm, and the flow range can be 10 standard liters per minute (sccm)-200 sccm.
  • the cooling of the base film 230 can be effectively realized at a lower cost by using the inert gas for cooling.
  • the air cooling tube 243 may include a plurality of air ports.
  • Each of the plurality of air ports may cover the width of the base film 230 , or the plurality of air ports may entirely cover the width of the base film 230 .
  • the width of the base film 230 may also be referred to as width.
  • the number of multiple air ports can be determined based on the width.
  • the air-cooling tube 243 can continuously spray out the heat transfer medium.
  • the film coating device 200 may include a control system.
  • the control system can control the air opening of the air cooling tube 243 to open, so that the air cooling tube 243 passes the heat transfer medium through the air opening between the cold drum 241 and the base film 230.
  • the control system may control the air port of the air-cooling pipe 243 to be closed, thereby saving heat transfer medium and reducing the cost of cooling the base film 230 .
  • the air-cooled pipe 243 is further provided, that is, the base film 230 is cooled under the joint action of the cold drum 241 and the air-cooled pipe 243, which can further enhance the protection of the base film 230. cooling effect.
  • the cooling unit 240 of the embodiment of the present application may include the air cooling tube 243 without the cooling drum 241 and the bias roll 242, or the cooling unit 240 may include the air cooling tube 243 and the bias roll 242, but not the bias roll. 242 plus negative voltage. In other words, in the embodiment of the present application, only the air cooling tube 243 can cool the base film 230 .
  • the coating equipment 200 in the embodiment of the present application may be a roll-to-roll coating equipment.
  • the film coating device 200 may further include an unwinding roll 250 and a winding roll 260 in addition to the plating resist pattern unit 210 and the film coating unit 220 .
  • the unwinding roller 250 is arranged at the most upstream in the conveying direction of the base film 230 for conveying the base film 230 along the conveying direction.
  • the take-up roller 260 is arranged at the most downstream in the conveying direction, and is used for collecting the coated base film 230 .
  • the coating device 200 may further include at least one conveying roller, which is used to convey the base film 230 to the plating resist pattern unit 210 and the cooling unit 24 along the conveying direction.
  • the coating device 200 includes a plurality of transfer rollers
  • the sizes of the plurality of transfer rollers may be the same or different, which is not limited in this embodiment of the present application.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physical Vapour Deposition (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Des modes de réalisation de la présente demande concernent un appareil de revêtement, qui peut former un revêtement à motif de haute précision sur un film de base, ce qui permet d'améliorer les performances d'un ensemble (tel qu'un collecteur de courant) comprenant le film de base. L'appareil de revêtement comprend : une unité de motif de placage de résistance (210), utilisée pour former, sur une région partielle d'une surface du film de base (230), un motif composé d'une substance de placage de résistance, la substance de placage de résistance étant utilisée pour limiter la formation d'un revêtement par la vapeur métallique ; et une unité de revêtement (220), utilisée pour appliquer la vapeur métallique au film de base (230) ayant le motif, de façon à former un revêtement métallique sur la région où la substance de placage de résistance n'est pas disposée sur la surface du film de base (230).
PCT/CN2022/144267 2022-01-13 2022-12-30 Appareil de revêtement WO2023134484A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202290000315.4U CN221051971U (zh) 2022-01-13 2022-12-30 镀膜设备
EP22920114.0A EP4382631A1 (fr) 2022-01-13 2022-12-30 Appareil de revêtement
US18/735,190 US20240327972A1 (en) 2022-01-13 2024-06-06 Coating apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210037973.7 2022-01-13
CN202210037973.7A CN116479373A (zh) 2022-01-13 2022-01-13 镀膜设备

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/735,190 Continuation US20240327972A1 (en) 2022-01-13 2024-06-06 Coating apparatus

Publications (1)

Publication Number Publication Date
WO2023134484A1 true WO2023134484A1 (fr) 2023-07-20

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PCT/CN2022/144267 WO2023134484A1 (fr) 2022-01-13 2022-12-30 Appareil de revêtement

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US (1) US20240327972A1 (fr)
EP (1) EP4382631A1 (fr)
CN (2) CN116479373A (fr)
WO (1) WO2023134484A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201074245Y (zh) * 2007-08-02 2008-06-18 武汉华工图像技术开发有限公司 一种用于全息标识和包装的塑料薄膜镀膜的装置
JP2009221506A (ja) * 2008-03-14 2009-10-01 Panasonic Corp 金属化フィルムの製造装置
CN101880856A (zh) * 2010-07-30 2010-11-10 汕头万顺包装材料股份有限公司 一种在印材上进行局部真空蒸镀的设备
CN112638645A (zh) * 2018-08-29 2021-04-09 王子控股株式会社 金属层一体型聚丙烯薄膜、薄膜电容器和金属层一体型聚丙烯薄膜的制造方法
CN212925150U (zh) * 2020-08-31 2021-04-09 合肥东昇机械科技有限公司 一种新型薄膜双舟双面镀膜装置
CN112853307A (zh) * 2021-02-25 2021-05-28 厦门海辰新能源科技有限公司 镀膜装置、镀膜系统及其使用方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201074245Y (zh) * 2007-08-02 2008-06-18 武汉华工图像技术开发有限公司 一种用于全息标识和包装的塑料薄膜镀膜的装置
JP2009221506A (ja) * 2008-03-14 2009-10-01 Panasonic Corp 金属化フィルムの製造装置
CN101880856A (zh) * 2010-07-30 2010-11-10 汕头万顺包装材料股份有限公司 一种在印材上进行局部真空蒸镀的设备
CN112638645A (zh) * 2018-08-29 2021-04-09 王子控股株式会社 金属层一体型聚丙烯薄膜、薄膜电容器和金属层一体型聚丙烯薄膜的制造方法
CN212925150U (zh) * 2020-08-31 2021-04-09 合肥东昇机械科技有限公司 一种新型薄膜双舟双面镀膜装置
CN112853307A (zh) * 2021-02-25 2021-05-28 厦门海辰新能源科技有限公司 镀膜装置、镀膜系统及其使用方法

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EP4382631A1 (fr) 2024-06-12
US20240327972A1 (en) 2024-10-03
CN116479373A (zh) 2023-07-25
CN221051971U (zh) 2024-05-31

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